Molar Mass of Chemical Compound

Create a function that takes a name of a chemical compound as a string and returns the molar mass of the compound. For this challenge only, required data is included below.

Data

H -> 1
B -> 10
O -> 16
S -> 32
N -> 14
Cl -> 35

Water = "H2 O"
BoricAcid = "H3 B O3"
SulfuricAcid = "H2 S O4"
NitricAcid = "H N O3"
HydroChloricAcid = "H Cl"

Examples

molar_mass("SulfuricAcid") ➞ "H2 S O4"
# H * 2 + S * 1 +  O * 4 -----> 1 * 2 + 32 * 1 + 16 * 4 = 98

molar_mass("Water") ➞ "H2 O"
# H * 2 +  O * 1 -----> 1 * 2 + 16 * 1 = 18

Notes

• Input is a string and return value is number.
• In the data, "O" is an English letter, not zero.