CC12CC3OC(=O)C1COC14OC5(C2C1=O)C(O)(CCC1C4CC2OC24CC=CC(=O)C14C)C(=O)OC35C
The donor in a hydrogen bond is usually a strongly electronegative atom such as N, O, or F that is covalently bonded to a hydrogen bond. How many hydrogen bond donors does the molecule have?